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Emission patterns of the localizer and glide slope signals Glide slope station for runway 09R at Hannover Airport in Germany. In aviation, instrument landing system glide path, commonly referred to as a glide path (G/P) or glide slope (G/S), is "a system of vertical guidance embodied in the instrument landing system which indicates the vertical deviation of the aircraft from its optimum path ...
ILS planes. An instrument landing system operates as a ground-based instrument approach system that provides precision lateral and vertical guidance to an aircraft approaching and landing on a runway, using a combination of radio signals and, in many cases, high-intensity lighting arrays to enable a safe landing during instrument meteorological conditions (IMC), such as low ceilings or reduced ...
A composite image of an Alliance Airlines Fokker 70 on final approach at Christmas Island Airport, illustrating the approach slope to the runway. The term glide slope is sometimes used to mean approach slope, although in precise usage the glide slope is the vertical guidance element of the instrument landing system. [2]
Datum lights – a horizontal row of green lamps used to give the pilot a reference against which he may judge his position relative to the glide slope. Ball (or "meatball"; also known as "the source") – indicates the relative position of the aircraft with reference to glide slope. If the aircraft is high, the ball will be above the datum ...
Localizer as component of an ILS (KMEZ runway 27, Mena, Arkansas) Emission patterns of the localizer and glide path signals. An instrument landing system localizer, or simply localizer (LOC, [1] or LLZ prior to 2007 [2]), is a system of horizontal guidance in the instrument landing system, which is used to guide aircraft along the axis of the runway.
The optimum distance from the runway threshold depends on the wheel clearance over the threshold of the types of aircraft expected to land on the runway; compatibility with non-visual glide paths such as instrument landing system (ILS) down to the minimum possible range and height; and any difference in elevation between the PAPI installation ...
Critical areas also protect the ILS system's internal monitoring [clarification needed]. ILS technology delivers two main types of information to pilots. These types include the glideslope (vertical location relative to the designed glide path) and the localizer (lateral position relative to the designed approach course). Each type of ...
Visual Glide Slope Indicator or Visual Glideslope Indicator (VGSI) is a ground device that uses lights to assist a pilot in landing an airplane at an airport.The lights define a vertical approach path during the final approach to a runway and can help the pilot determine if the airplane is too high or too low for an optimum landing.